RU2007128238A - METHOD FOR PRODUCING CARBOXYLated BUTADIENE-STYROLATE LATEX - Google Patents

METHOD FOR PRODUCING CARBOXYLated BUTADIENE-STYROLATE LATEX Download PDF

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Publication number
RU2007128238A
RU2007128238A RU2007128238/04A RU2007128238A RU2007128238A RU 2007128238 A RU2007128238 A RU 2007128238A RU 2007128238/04 A RU2007128238/04 A RU 2007128238/04A RU 2007128238 A RU2007128238 A RU 2007128238A RU 2007128238 A RU2007128238 A RU 2007128238A
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RU
Russia
Prior art keywords
latex
mixture
monomer
emulsifiers
monomers
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RU2007128238/04A
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Russian (ru)
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RU2374266C2 (en
Inventor
Александр Алексеевич Рыльков (RU)
Александр Алексеевич Рыльков
Людмила Андреевна Корыстина (RU)
Людмила Андреевна Корыстина
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ОАО "Воронежсинтезкаучук" (RU)
ОАО "Воронежсинтезкаучук"
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Priority to RU2007128238/04A priority Critical patent/RU2374266C2/en
Publication of RU2007128238A publication Critical patent/RU2007128238A/en
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Publication of RU2374266C2 publication Critical patent/RU2374266C2/en

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  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Claims (1)

Способ получения бутадиен-стирольного карбоксилированного латекса путем эмульсионной сополимеризации бутадиена, стирола, метакриловой кислоты в присутствии инициатора, эмульгатора - комбинации неионогенного ПАВ с ионными эмульгаторами, регулятора молекулярной массы, с последующим связыванием незаполимеризовавшихся мономеров, путем введения окислительно-восстановительной инициирующей системы, отличающийся тем, что вначале в реактор, содержащий персульфат калия в количестве 0,3-0,5 мас.ч., подают 8-12% мономерной эмульсии, включающей мономеры, воду, смесь эмульгаторов, процесс ведут при перемешивании и при температуре 76-80°С до конверсии не менее 70%, а затем непрерывно подают оставшуюся часть мономеров при массовом соотношении мономер: полимер 1:1,5-10 мас.ч., и при достижении конверсии мономеров не менее 97%, в латекс дополнительно вводят окислительно-восстановительную инициирующую систему, включающую гидроперекись третичного бутила и формальдегидсульфоксилат натрия в количестве 0,2-0,05 мас.ч. к мономеру, в качестве смеси эмульгаторов используют смесь поверхностно-активных веществ - алкилбензолсульфоната натрия, оксиэтилированного алкилфенола со степенью оксиэтилирования 6-12 и алкил- или алкилфенол сульфоэтоксилат натрия или аммония со степенью оксиэтилирования 2-30 в соотношении 5-6:1:1 мас.ч. A method of producing butadiene-styrene carboxylated latex by emulsion copolymerization of butadiene, styrene, methacrylic acid in the presence of an initiator, emulsifier - a combination of a nonionic surfactant with ionic emulsifiers, a molecular weight regulator, followed by binding of non-polymerized monomers, by introducing a redox initiating system, which introduces a redox initiating system that initially, in the reactor containing potassium persulfate in an amount of 0.3-0.5 parts by weight, 8-12% of a monomer emulsion comprising mon omers, water, a mixture of emulsifiers, the process is carried out with stirring and at a temperature of 76-80 ° C until a conversion of at least 70%, and then the remainder of the monomers are continuously fed at a weight ratio of monomer: polymer 1: 1.5-10 wt.h. , and when the conversion of monomers is not less than 97%, a redox initiating system is additionally introduced into the latex, including tertiary butyl hydroperoxide and sodium formaldehyde sulfoxylate in an amount of 0.2-0.05 wt.h. to the monomer, as a mixture of emulsifiers, a mixture of surface-active substances is used - sodium alkylbenzenesulfonate, hydroxyethylated alkyl phenol with a degree of hydroxyethylation of 6-12 and alkyl or alkyl phenol sulfoethoxylate of sodium or ammonium with a degree of hydroxyethylation of 2-30 in the ratio of 5-6: 1: 1 wt. .h.
RU2007128238/04A 2007-07-23 2007-07-23 Method of producing carboxylated butadiene-styrene latex RU2374266C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2007128238/04A RU2374266C2 (en) 2007-07-23 2007-07-23 Method of producing carboxylated butadiene-styrene latex

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2007128238/04A RU2374266C2 (en) 2007-07-23 2007-07-23 Method of producing carboxylated butadiene-styrene latex

Publications (2)

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RU2007128238A true RU2007128238A (en) 2009-01-27
RU2374266C2 RU2374266C2 (en) 2009-11-27

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RU2007128238/04A RU2374266C2 (en) 2007-07-23 2007-07-23 Method of producing carboxylated butadiene-styrene latex

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114456316A (en) * 2020-11-07 2022-05-10 中国石油化工股份有限公司 Method for improving emulsion polymerized styrene butadiene rubber conversion rate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114456316A (en) * 2020-11-07 2022-05-10 中国石油化工股份有限公司 Method for improving emulsion polymerized styrene butadiene rubber conversion rate
CN114456316B (en) * 2020-11-07 2024-01-09 中国石油化工股份有限公司 Method for improving emulsion polymerized styrene-butadiene rubber conversion rate

Also Published As

Publication number Publication date
RU2374266C2 (en) 2009-11-27

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